#include "xbt/ex.h"
#include "xbt/str.h"
#include "xbt/module.h" /* xbt_binary_name */
+#include "xbt_modinter.h" /* backtrace initialization headers */
#include "xbt/synchro.h" /* xbt_thread_self */
#include "gras/Virtu/virtu_interface.h" /* gras_os_myname */
#include "xbt/ex_interface.h"
-#if (defined(WIN32) && defined(_M_IX86))
-#include <dbghelp.h>
+#undef HAVE_BACKTRACE
+#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE)
+# define HAVE_BACKTRACE 1 /* Hello linux box */
#endif
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex,xbt,"Exception mecanism");
-
-#if (defined(WIN32) && defined(_M_IX86))
-
-/*
- * Win32 (x86) implementation backtrace, backtrace_symbols, backtrace_symbols_fd
- * : support for application self-debugging.
- */
-
-/* Pointer function to SymInitialize() */
-typedef BOOL (WINAPI *xbt_pfn_sym_initialize_t)(HANDLE, PSTR , BOOL);
-
-/* Pointer function to SymCleanup() */
-typedef BOOL (WINAPI *xbt_pfn_sym_cleanup_t)(HANDLE hProcess);
-
-/* Pointer function to SymFunctionTableAccess() */
-typedef PVOID (WINAPI *xbt_pfn_sym_function_table_access_t)(HANDLE, DWORD);
-
-/* Pointer function to SymGetLineFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_line_from_addr_t)(HANDLE, DWORD, PDWORD , PIMAGEHLP_LINE);
-
-/* Pointer function to SymGetModuleBase() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_module_base_t)(HANDLE,DWORD);
-
-/* Pointer function to SymGetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_get_options_t)(VOID);
-
-/* Pointer function to SymGetSymFromAddr() */
-typedef BOOL (WINAPI *xbt_pfn_sym_get_sym_from_addr_t)(HANDLE, DWORD, PDWORD , OUT PIMAGEHLP_SYMBOL);
-
-/* Pointer function to SymSetOptions() */
-typedef DWORD (WINAPI *xbt_pfn_sym_set_options_t)(DWORD);
-
-/* Pointer function to StackWalk() */
-typedef BOOL (WINAPI *xbt_pfn_stack_walk_t)(DWORD, HANDLE, HANDLE ,LPSTACKFRAME, PVOID,PREAD_PROCESS_MEMORY_ROUTINE, PFUNCTION_TABLE_ACCESS_ROUTINE, PGET_MODULE_BASE_ROUTINE, PTRANSLATE_ADDRESS_ROUTINE);
-
-/* This structure representes the debug_help library used interface */
-typedef struct s_xbt_debug_help
-{
- HINSTANCE instance;
- HANDLE process_handle;
- xbt_pfn_sym_initialize_t sym_initialize;
- xbt_pfn_sym_cleanup_t sym_cleanup;
- xbt_pfn_sym_function_table_access_t sym_function_table_access;
- xbt_pfn_sym_get_line_from_addr_t sym_get_line_from_addr;
- xbt_pfn_sym_get_module_base_t sym_get_module_base;
- xbt_pfn_sym_get_options_t sym_get_options;
- xbt_pfn_sym_get_sym_from_addr_t sym_get_sym_from_addr;
- xbt_pfn_sym_set_options_t sym_set_options;
- xbt_pfn_stack_walk_t stack_walk;
-}s_xbt_debug_hlp_t,* xbt_debug_hlp_t;
-
-
-/* the address to the unique reference to the debug help library interface */
-static xbt_debug_hlp_t
-dbg_hlp = NULL;
-
-/* initialize the debug help library */
-static int
-dbg_hlp_init(HANDLE process_handle);
-
-/* finalize the debug help library */
-static int
-dbg_hlp_finalize(void);
-
-/*
- * backtrace() function.
- *
- * Returns a backtrace for the calling program, in the array
- * pointed to by buffer. A backtrace is the series of currently active
- * function calls for the program. Each item in the array pointed to by
- * buffer is of type void *, and is the return address from the corre-
- * sponding stack frame. The size argument specifies the maximum number
- * of addresses that can be stored in buffer. If the backtrace is larger
- * than size, then the addresses corresponding to the size most recent
- * function calls are returned; to obtain the complete backtrace, make
- * sure that buffer and size are large enough.
- */
-
-int
-backtrace (void **buffer, int size);
-
-/*
- * backtrace_symbols() function.
- *
- * Given the set of addresses returned by backtrace() in buffer, back-
- * trace_symbols() translates the addresses into an array of strings containing
- * the name, the source file and the line number or the las called functions.
- */
-char **
-backtrace_symbols (void *const *buffer, int size);
+#if defined(WIN32) && defined(_M_IX86) && !defined(__GNUC__)
+# define HAVE_BACKTRACE 1 /* Hello x86 windows box */
+#endif
+
-/*
- * backtrace_symbols_fd() function.
- *
- * Same as backtrace_symbols() function but, the the array of strings is wrotten
- * in a file (fd is the file descriptor of this file)
- */
-void
-backtrace_symbols_fd(void *const *buffer, int size, int fd);
-#endif
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex,xbt,"Exception mecanism");
/* default __ex_ctx callback function */
ex_ctx_t *__xbt_ex_ctx_default(void) {
void xbt_ex_setup_backtrace(xbt_ex_t *e);
void xbt_backtrace_current(xbt_ex_t *e) {
-#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) || (defined(WIN32) && defined(_M_IX86))
- e->used = backtrace((void**)e->bt,XBT_BACKTRACE_SIZE);
- e->bt_strings = NULL;
+#ifdef HAVE_BACKTRACE
xbt_ex_setup_backtrace(e);
#endif
}
void xbt_backtrace_display(xbt_ex_t *e) {
-#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) || (defined(WIN32) && defined(_M_IX86))
+#ifdef HAVE_BACKTRACE
int i;
if (e->used == 0) {
xbt_backtrace_display(&e);
}
-#ifndef WIN32
-extern char **environ; /* the environment, as specified by the opengroup */
-#endif
-
-void xbt_ex_setup_backtrace(xbt_ex_t *e) {
#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE)
- int i;
- /* to get the backtrace from the libc */
- char **backtrace = backtrace_symbols (e->bt, e->used);
-
- /* To build the commandline of addr2line */
- char *cmd, *curr;
-
- /* to extract the addresses from the backtrace */
- char **addrs=xbt_new(char*,e->used);
- char buff[256],*p;
-
- /* To read the output of addr2line */
- FILE *pipe;
- char line_func[1024],line_pos[1024];
-
- /* size (in char) of pointers on this arch */
- int addr_len=0;
-
- /* To search for the right executable path when not trivial */
- struct stat stat_buf;
- char *binary_name = NULL;
-
- /* Some arches only have stubs of backtrace, no implementation (hppa comes to mind) */
- if (!e->used)
- return;
-
- /* build the commandline */
- if (stat(xbt_binary_name,&stat_buf)) {
- /* Damn. binary not in current dir. We'll have to dig the PATH to find it */
- int i;
- for (i=0; environ[i]; i++) {
- if (!strncmp("PATH=",environ[i], 5)) {
- xbt_dynar_t path=xbt_str_split(environ[i] + 5, ":");
- unsigned int cpt;
- char *data;
- xbt_dynar_foreach(path, cpt, data) {
- if (binary_name)
- free(binary_name);
- binary_name = bprintf("%s/%s",data,xbt_binary_name);
- if (!stat(binary_name,&stat_buf)) {
- /* Found. */
- DEBUG1("Looked in the PATH for the binary. Found %s",binary_name);
- xbt_dynar_free(&path);
- break;
- }
- }
- if (stat(binary_name,&stat_buf)) {
- /* not found */
- e->used = 1;
- e->bt_strings = xbt_new(char*,1);
- e->bt_strings[0] = bprintf("(binary '%s' not found the path)",xbt_binary_name);
- return;
- }
- xbt_dynar_free(&path);
- break;
- }
- }
- } else {
- binary_name = xbt_strdup(xbt_binary_name);
- }
- cmd = curr = xbt_new(char,strlen(ADDR2LINE)+25+strlen(binary_name)+32*e->used);
-
- curr += sprintf(curr,"%s -f -e %s ",ADDR2LINE,binary_name);
- free(binary_name);
-
- for (i=0; i<e->used;i++) {
- /* retrieve this address */
- DEBUG2("Retrieving address number %d from '%s'", i, backtrace[i]);
- snprintf(buff,256,"%s",strchr(backtrace[i],'[')+1);
- p=strchr(buff,']');
- *p='\0';
- if (strcmp(buff,"(nil)"))
- addrs[i]=bprintf("%s", buff);
- else
- addrs[i]=bprintf("0x0");
- DEBUG3("Set up a new address: %d, '%s'(%p)", i, addrs[i], addrs[i]);
-
- /* Add it to the command line args */
- curr+=sprintf(curr,"%s ",addrs[i]);
- }
- addr_len = strlen(addrs[0]);
-
- /* parse the output and build a new backtrace */
- e->bt_strings = xbt_new(char*,e->used);
-
- VERB1("Fire a first command: '%s'", cmd);
- pipe = popen(cmd, "r");
- if (!pipe) {
- CRITICAL0("Cannot fork addr2line to display the backtrace");
- abort();
- }
-
- for (i=0; i<e->used; i++) {
- DEBUG2("Looking for symbol %d, addr = '%s'", i, addrs[i]);
- fgets(line_func,1024,pipe);
- line_func[strlen(line_func)-1]='\0';
- fgets(line_pos,1024,pipe);
- line_pos[strlen(line_pos)-1]='\0';
-
- if (strcmp("??",line_func)) {
- DEBUG2("Found static symbol %s() at %s", line_func, line_pos);
- e->bt_strings[i] = bprintf("** In %s() at %s", line_func,line_pos);
- } else {
- /* Damn. The symbol is in a dynamic library. Let's get wild */
- char *maps_name;
- FILE *maps;
- char maps_buff[512];
-
- long int addr,offset=0;
- char *p,*p2;
-
- char *subcmd;
- FILE *subpipe;
- int found=0;
-
- /* let's look for the offset of this library in our addressing space */
- maps_name=bprintf("/proc/%d/maps",(int)getpid());
- maps=fopen(maps_name,"r");
-
- sscanf(addrs[i],"%lx",&addr);
- sprintf(maps_buff,"%#lx",addr);
-
- if (strcmp(addrs[i],maps_buff)) {
- CRITICAL2("Cannot parse backtrace address '%s' (addr=%#lx)",
- addrs[i], addr);
- }
- DEBUG2("addr=%s (as string) =%#lx (as number)",addrs[i],addr);
-
- while (!found) {
- long int first, last;
- if (fgets(maps_buff,512,maps) == NULL)
- break;
- if (i==0) {
- maps_buff[strlen(maps_buff) -1]='\0';
- DEBUG1("map line: %s", maps_buff);
- }
- sscanf(maps_buff,"%lx",&first);
- p=strchr(maps_buff,'-')+1;
- sscanf(p,"%lx",&last);
- if (first < addr && addr < last) {
- offset = first;
- found=1;
- }
- if (found) {
- DEBUG3("%#lx in [%#lx-%#lx]", addr, first,last);
- DEBUG0("Symbol found, map lines not further displayed (even if looking for next ones)");
- }
- }
- fclose(maps);
- free(maps_name);
-
- if (!found) {
- VERB0("Problem while reading the maps file. Following backtrace will be mangled.");
- DEBUG1("No dynamic. Static symbol: %s", backtrace[i]);
- e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace[i]);
- continue;
- }
-
- /* Ok, Found the offset of the maps line containing the searched symbol.
- We now need to substract this from the address we got from backtrace.
- */
-
- free(addrs[i]);
- addrs[i] = bprintf("0x%0*lx",addr_len-2,addr-offset);
- DEBUG2("offset=%#lx new addr=%s",offset,addrs[i]);
-
- /* Got it. We have our new address. Let's get the library path and we
- are set */
- p = xbt_strdup(backtrace[i]);
- if (p[0]=='[') {
- /* library path not displayed in the map file either... */
- free(p);
- sprintf(line_func,"??");
- } else {
- p2 = strrchr(p,'(');
- if (p2) *p2= '\0';
- p2 = strrchr(p,' ');
- if(p2) *p2= '\0';
-
- /* Here we go, fire an addr2line up */
- subcmd = bprintf("%s -f -e %s %s",ADDR2LINE,p, addrs[i]);
- free(p);
- VERB1("Fire a new command: '%s'",subcmd);
- subpipe = popen(subcmd,"r");
- if (!subpipe) {
- CRITICAL0("Cannot fork addr2line to display the backtrace");
- abort();
- }
- fgets(line_func,1024,subpipe);
- line_func[strlen(line_func)-1]='\0';
- fgets(line_pos,1024,subpipe);
- line_pos[strlen(line_pos)-1]='\0';
- pclose(subpipe);
- free(subcmd);
- }
-
- /* check whether the trick worked */
- if (strcmp("??",line_func)) {
- DEBUG2("Found dynamic symbol %s() at %s", line_func, line_pos);
- e->bt_strings[i] = bprintf("** In %s() at %s", line_func,line_pos);
- } else {
- /* damn, nothing to do here. Let's print the raw address */
- DEBUG1("Dynamic symbol not found. Raw address = %s", backtrace[i]);
- e->bt_strings[i] = bprintf("** In ?? at %s", backtrace[i]);
- }
-
- }
- free(addrs[i]);
-
- /* Mask the bottom of the stack */
- if (!strncmp("main",line_func,strlen("main")) ||
- !strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) {
- int j;
- for (j=i+1; j<e->used; j++)
- free(addrs[j]);
- e->used = i;
-
- if (!strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) {
- e->used++;
- e->bt_strings[i] = bprintf("** (in a separate thread)");
- }
- }
-
-
- }
- pclose(pipe);
- free(addrs);
- free(backtrace);
- free(cmd);
-#elif (defined(WIN32) && defined (_M_IX86))
-int i;
- /* to get the backtrace from the libc */
- char **backtrace = backtrace_symbols (e->bt, e->used);
-
- /* parse the output and build a new backtrace */
- e->bt_strings = xbt_new(char*,e->used);
-
-
- for(i=0; i<e->used; i++)
- {
- e->bt_strings[i] = strdup(backtrace[i]);
- free(backtrace[i]);
- }
-
- free(backtrace);
+# include "backtrace_linux.c"
+#elif (defined(WIN32) && defined (_M_IX86)) && !defined(__GNUC__)
+# include "backtrace_windows.c"
+#else
+# include "backtrace_dummy.c"
#endif
-}
/** @brief shows an exception content and the associated stack if available */
void xbt_ex_display(xbt_ex_t *e) {
if (!e->remote && !e->bt_strings)
xbt_ex_setup_backtrace(e);
-#if (defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE)) || (defined(WIN32) && defined(_M_IX86))
+#ifdef HAVE_BACKTRACE
/* We have everything to build neat backtraces */
{
int i;
}
}
-#ifndef HAVE_EXECINFO_H
-# if (defined(WIN32) && defined(_M_IX86))
-int
-backtrace (void **buffer, int size)
-{
- int pos = 0;
- STACKFRAME* stack_frame;
- int first = 1;
-
- CONTEXT context = {CONTEXT_FULL};
- GetThreadContext(GetCurrentThread(), &context);
-
- /* ebp pointe sur la base de la pile */
- /* esp pointe sur le stack pointer <=> sur le dernier élément déposé dans la pile (l'élément courant) */
- _asm call $+5
- _asm pop eax
- _asm mov context.Eip, eax
- _asm mov eax, esp
- _asm mov context.Esp, eax
- _asm mov context.Ebp, ebp
-
- dbg_hlp_init(GetCurrentProcess());
-
- if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer))
- {
- errno = EINVAL;
- return 0;
- }
-
- for(pos = 0; pos < size; pos++)
- buffer[pos] = NULL;
-
- pos = 0;
-
- while(pos < size)
- {
- stack_frame = (void*)calloc(1,sizeof(STACKFRAME));
-
- if(!stack_frame)
- {
- errno = ENOMEM;
- break;
- }
-
- stack_frame->AddrPC.Offset = context.Eip;
- stack_frame->AddrPC.Mode = AddrModeFlat;
-
- stack_frame->AddrFrame.Offset = context.Ebp;
- stack_frame->AddrFrame.Mode = AddrModeFlat;
-
- stack_frame->AddrStack.Offset = context.Esp;
- stack_frame->AddrStack.Mode = AddrModeFlat;
-
- if((*(dbg_hlp->stack_walk))(
- IMAGE_FILE_MACHINE_I386,
- dbg_hlp->process_handle,
- GetCurrentThread(),
- stack_frame,
- &context,
- NULL,
- dbg_hlp->sym_function_table_access,
- dbg_hlp->sym_get_module_base,
- NULL)
- && !first)
- {
- if(stack_frame->AddrReturn.Offset)
- buffer[pos++] = (void*)stack_frame;
- else
- {
- free(stack_frame); /* no symbol */
- break;
- }
- }
- else
- {
- free(stack_frame);
-
- if(first)
- first = 0;
- else
- break;
- }
- }
-
- return pos;
-}
-
-char **
-backtrace_symbols (void *const *buffer, int size)
-{
- int pos;
- int success = 0;
- char** strings;
- STACKFRAME* stack_frame;
- char str[MAX_SYM_NAME] = {0};
- IMAGEHLP_SYMBOL * pSym;
- unsigned long displacement = 0;
- IMAGEHLP_LINE line_info = {0};
- IMAGEHLP_MODULE module = {0};
- byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
-
- if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer))
- {
- errno = EINVAL;
- return NULL;
- }
-
- strings = (char**)calloc(size,sizeof(char*));
-
- if(NULL == strings)
- {
- errno = ENOMEM;
- return NULL;
- }
-
- pSym = (IMAGEHLP_SYMBOL*)__buffer;
-
- pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
- pSym->MaxNameLength = MAX_SYM_NAME;
-
-
- line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
- module.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
-
- for(pos = 0; pos < size; pos++)
- {
- stack_frame = (STACKFRAME*)(buffer[pos]);
-
- if(NULL != stack_frame)
- {
-
- if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,pSym))
- {
- if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,&line_info))
- {
-
- sprintf(str,"** In %s() at %s:%d", pSym->Name,line_info.FileName,line_info.LineNumber);
-
- strings[pos] = strdup(str);
- memset(str,0,MAX_SYM_NAME);
-
- success = 1;
- }
- }
-
- free(stack_frame);
- }
- else
- break;
- }
-
- if(!success)
- {
- free(strings);
- strings = NULL;
- }
-
- dbg_hlp_finalize();
-
- return strings;
-}
-
-void
-backtrace_symbols_fd(void *const *buffer, int size, int fd)
-{
- int pos;
- int success = 0;
- STACKFRAME* stack_frame;
- char str[MAX_SYM_NAME] = {0};
- IMAGEHLP_SYMBOL * pSym;
- unsigned long displacement = 0;
- IMAGEHLP_LINE line_info = {0};
- IMAGEHLP_MODULE module = {0};
-
- byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
-
- if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer) || (-1 == fd))
- {
- errno = EINVAL;
- return;
- }
-
- pSym = (IMAGEHLP_SYMBOL*)__buffer;
-
- pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
- pSym->MaxNameLength = MAX_SYM_NAME;
-
-
- line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE);
- module.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
-
- for(pos = 0; pos < size; pos++)
- {
- stack_frame = (STACKFRAME*)(buffer[pos]);
-
- if(NULL != stack_frame)
- {
-
- if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,pSym))
- {
- if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,&line_info))
- {
-
-
- sprintf(str,"** In %s() at %s:%d\n", pSym->Name,line_info.FileName,line_info.LineNumber);
-
- if(-1 == write(fd,str,strlen(str)))
- break;
-
- memset(str,0,MAX_SYM_NAME);
-
- success = 1;
- }
- }
-
- free(stack_frame);
- }
- else
- break;
- }
-
- dbg_hlp_finalize();
-
-}
-
-static int
-dbg_hlp_init(HANDLE process_handle)
-{
- if(dbg_hlp)
- {
- /* debug help is already loaded */
- return 0;
- }
-
- /* allocation */
- dbg_hlp = (xbt_debug_hlp_t)calloc(1,sizeof(s_xbt_debug_hlp_t));
-
- if(!dbg_hlp)
- return ENOMEM;
-
- /* load the library */
- dbg_hlp->instance = LoadLibraryA("Dbghelp.dll");
-
- if(!(dbg_hlp->instance))
- {
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- /* get the pointers to debug help library exported functions */
-
- if(!((dbg_hlp->sym_initialize) = (xbt_pfn_sym_initialize_t)GetProcAddress(dbg_hlp->instance,"SymInitialize")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_cleanup) = (xbt_pfn_sym_cleanup_t)GetProcAddress(dbg_hlp->instance,"SymCleanup")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_function_table_access) = (xbt_pfn_sym_function_table_access_t)GetProcAddress(dbg_hlp->instance,"SymFunctionTableAccess")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_line_from_addr) = (xbt_pfn_sym_get_line_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetLineFromAddr")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_module_base) = (xbt_pfn_sym_get_module_base_t)GetProcAddress(dbg_hlp->instance,"SymGetModuleBase")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_options) = (xbt_pfn_sym_get_options_t)GetProcAddress(dbg_hlp->instance,"SymGetOptions")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_get_sym_from_addr) = (xbt_pfn_sym_get_sym_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetSymFromAddr")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->sym_set_options) = (xbt_pfn_sym_set_options_t)GetProcAddress(dbg_hlp->instance,"SymSetOptions")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- if(!((dbg_hlp->stack_walk) = (xbt_pfn_stack_walk_t)GetProcAddress(dbg_hlp->instance,"StackWalk")))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
- dbg_hlp->process_handle = process_handle;
-
- (*(dbg_hlp->sym_set_options))((*(dbg_hlp->sym_get_options))() | SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS);
-
- if(!(*(dbg_hlp->sym_initialize))(dbg_hlp->process_handle,0,1))
- {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int)GetLastError();
- }
-
-
- return 0;
-}
-
-static int
-dbg_hlp_finalize(void)
-{
- if(!dbg_hlp)
- return EINVAL;
-
- if(!(*(dbg_hlp->sym_cleanup))(dbg_hlp->process_handle))
- return (int)GetLastError();
-
- if(!FreeLibrary(dbg_hlp->instance))
- return (int)GetLastError();
-
- free(dbg_hlp);
- dbg_hlp = NULL;
-
- return 0;
-}
-# endif
-#else
-/* dummy implementation. We won't use the result, but ex.h needs it to be defined */
-int backtrace (void **__array, int __size) {
- return 0;
-}
-
-#endif
#ifdef SIMGRID_TEST
#include <stdio.h>
